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Finding the Fourth Proportional to 147.87, 203.97 and 98.67

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Solution

The fourth proportional to 147.87, 203.97 and 98.67 is: 136.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.87 : 203.97 = 98.67 : x
  2. Step 2: Convert to fraction form
    147.87/203.97 = 98.67/x
  3. Step 3: Cross multiply
    147.87x = 203.97 × 98.67
  4. Step 4: Simplify right side
    147.87x = 20,125.72
  5. Step 5: Solve for x
    x = 20,125.72/147.87
  6. Step 6: Final answer
    x = 136.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.